Disk apparatus with filter unit having detachable frame

Abstract

A disk apparatus includes a casing, a rotatable disk recording medium that is disposed within the casing, a head configured to process information with respect to the recording medium, an actuator assembly that is disposed within the casing and that movably supports the head, and a filter unit that is disposed within the casing. The filter unit includes a base section fixed to an inner surface of the casing, a holding frame coupled to the base, and a collection filter detachably held in place by the holding frame.

What is claimed is: 
     
       1. A disk apparatus, comprising:
 a casing; 
 a rotatable disk recording medium that is disposed within the casing; 
 a head configured to process information with respect to the recording medium; 
 an actuator assembly that is disposed within the casing and that movably supports the head; and 
 a filter unit that is disposed within the casing, wherein 
 the filter unit includes a base section fixed to an inner surface of the casing, a holding frame detachably coupled to the base section, and a collection filter detachably held in place by the holding frame, and 
 the base section includes a first surface that faces the inner surface of the casing, a second surface opposed to the first surface, a first recessed portion formed on the second surface, and a second recessed portion formed on the second surface, and 
 the holding frame includes:
 a first protruding portion including a first hook that engages the first recessed portion when inserted into the first recessed portion, and 
 a second protruding portion including a second hook that engages the second recessed portion when inserted into the second recessed portion. 
 
 
     
     
       2. The disk apparatus according to  claim 1 , wherein
 the holding frame further includes an elastically deformable lock lever on which the second hook is disposed. 
 
     
     
       3. The disk apparatus according to  claim 1 , wherein
 the holding frame further includes a preload application member that urges the holding frame in a direction away from the base section when the first hook engages the first recessed portion and the second hook engages the second recessed portion. 
 
     
     
       4. The disk apparatus according to  claim 3 , wherein
 the preload application member urges the holding frame away from the base section via elastic deformation of the preload application member. 
 
     
     
       5. The disk apparatus according to  claim 3 , wherein
 the preload application member includes a first beam that extends from the holding frame and a pressing projection that is disposed on a tip portion of the first beam and abuts on the second surface of the base section. 
 
     
     
       6. The disk apparatus according to  claim 1 , wherein
 the first recessed portion includes a first through-hole formed on the base section and the second recessed portion includes a second through-hole formed on the base section. 
 
     
     
       7. The disk apparatus according to  claim 1 , wherein
 the base section further includes a third recessed portion formed on the second surface, and 
 the holding frame further includes a positioning protrusion that protrudes into the third recessed portion and positions the holding frame at a predetermined position relative to the base section. 
 
     
     
       8. The disk apparatus according to  claim 1 , wherein
 the casing includes a base that accommodates the recording medium and a top cover that is fixed to the base, the base section of the filter unit being fixed to an inner surface of the top cover. 
 
     
     
       9. The disk apparatus according to  claim 8 , wherein
 the filter does not contact an inner surface of the base. 
 
     
     
       10. The disk apparatus according to  claim 1 , wherein
 the casing includes a base that accommodates the recording medium and a top cover that is fixed to the base, the base section of the filter unit being fixed to an inner surface of the base. 
 
     
     
       11. The disk apparatus according to  claim 10 , wherein
 the filter does not contact an inner surface of the top cover. 
 
     
     
       12. The disk apparatus according to  claim 1 , wherein
 the filter unit is disposed between the rotatable disk recording medium and a flexible printed circuit that is coupled to the actuator assembly. 
 
     
     
       13. A disk apparatus, comprising:
 a casing; 
 a rotatable disk recording medium that is disposed within the casing; 
 a head configured to process information with respect to the recording medium; 
 an actuator assembly that is disposed within the casing and that movably supports the head; and 
 a filter unit that is disposed within the casing, wherein 
 the filter unit includes a base section fixed to an inner surface of the casing, a holding frame that is formed integrally with the base section and coupled to the base section, and a collection filter detachably held in place by the holding frame, 
 the holding frame has an accommodation section that accommodates the collection filter and an insertion opening that is open to an end portion of the holding frame and communicates with the accommodation section, and 
 the holding frame includes a stopper that protrudes into the insertion opening and abuts on an end of the collection filter when the collection filter is disposed in the accommodation section. 
 
     
     
       14. The disk apparatus according to  claim 13 , wherein
 the collection filter is inserted into the accommodation section and withdrawn from the accommodation section through the insertion opening. 
 
     
     
       15. The disk apparatus according to  claim 13 , wherein
 the casing includes a base that accommodates the recording medium and a top cover that is fixed to the base, the base section of the filter unit being fixed to an inner surface of the base. 
 
     
     
       16. The disk apparatus according to  claim 15 , wherein
 the filter does not contact an inner surface of the top cover.